扭结涡旋子的形成与演化
Formation and evolution of kinky vortons
摘要：
本文给出了（2+1）维Z_2xU（1）对称模型的场论模拟。这个模型有两个离散的真空，允许畴壁，也是一个保守的诺特电荷。对于初始条件下，该领域被放置在一个真空，并给出了一个均匀的背景电荷，我们发现，墙的数量不标度的标准方式。我们认为，Noether电荷和电流成为本地化的墙壁上，形成弯曲的vortons，（2+1）维类似的宇宙vortons。这些壁环可以是长寿命的，甚至是稳定的，这取决于精确的特性。我们认为，我们的模拟说明了一个可能的机制，畴壁网络的动力学挫折和宇宙涡旋将自然形成的U（1）xU（1）模型。
英文摘要：
We present field theory simulations of a model with Z_2xU(1) symmetry in (2+1)-dimensions. This model has two discrete vacua, allowing for domain walls, and also a conserved Noether charge. For initial conditions in which the field is placed in one of the vacua and given a homogeneous background charge, we find that the number of walls does not scale in the standard way. We argue that the Noether charge and current become localized on the walls, forming kinky vortons, (2+1) dimensional analogues of cosmic vortons. These loops of wall can be long-lived, or even stable, depending on the precise characteristics. We suggest that our simulations illustrate a possible mechanism for dynamical frustration of domain wall networks and that cosmic vortons will form naturally in U(1)xU(1) models.
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